【正确答案】

【答案解析】[听力原文]4-6 One of the most important services in a modern hank is the checking account. It's a safe and more convenient way for everyone to handle money. Another important service is a regular passbook savings account. You can withdraw money whenever you need it. You need only fill out a form and give it to the bank clerk along with your passbook. One more important service in a bank is traveler's cheques. They are safe and more convenient for travelers. If you lose your cheques, or someone steals them, you can get a refund. For this service, the bank' asks a small fee. The credit card is a bigger service in a bank. You need fill out a form and tell about your salary and other income. The bank issues the credit cards to the customers with good credit. Most of these services do not provide a major source of income to the bank. The bank's largest source of income is through loans. 4. What is the checking account said to be in a modern bank?